Firepot



C. R. LAMBERT.

FIREPOT.

APPLICATION FILED MAY 4. 1918.

1,381 ,924. Patented June 21, 1921.

2 SHEETS-SHEET I.

C. R. LAMBERT.

FIREPOT APPLICATION FILED m AY4,191a.-

Patented June 21, 1921.

2 SHEETS-SHEET 2.

v UNITED STATES PATENT OFFICE.

oHARLEs n. LAMBERT, or nnrnorr, MicnIeAN; nssrsnor. TO CLAYTO & LAMBERT MANUFACTURING oorrrANY. or Darn-err, MICHIGAN, A conroimrron or MIGI-I- IGAN.'

FIREPGT.

Specification of Letters Patent. Patented J 21 1921 Application filedMay 191s. Serial No. 232,446.

To all 10 ham itmag concern:

Be it known that I, CHARLES R. LAMBERT, a citizen of the United States of America, residing at Detroit, in the countyof .Wayne and State of Michigan, have inventedcertain new and useful'lmprovements in Firepots of which the following is a specification, reference being had therein to the accompanying drawings.

This invention .relates to sheetmetal devices such as fire pots, although the invention in its broader aspects is not limited to the particularuse mentioned.

One of the objects of the invention is to provide a top plate section for fire pots or the like which can be formed as a stamping and which will have suiiicient strength and rigidity to properly support a heavy metal pot' for melting lead, solder or the like. Other objects of the invention are to provide a new and improved retaining device having a sheet metal bottom ring for connecting the melting pot shield to the top plate section of; the tire pot; and in'general to provide a new and improved top plate section, shield and retaining mechanism which can be entirely formed from sheet metal and preferably by a stamping operation.

The invention also resides in such other arrangements of parts and features of construction as will more fully hereinafter appear.

In the drawings:

Figure l is aside elevational view, showing a fire pot embodying my invention;'

Fig. 2 is an enlarged plan view of the top plate;

Fig. 3 is a section on line 3-3 of Fig. 2;

Fig. 4 is a plan view of the retaining ring;

Fig. 5 is a section on line 55 of Fig. 4;

Fig. 6 is a plan View showing the retaining ring and top plate section in assembled position.

Referring to the particular construction shown in the drawings and describing first in detail the general. arrangement of parts illustrated in Fig. 1, A designates a fire pot having a tank or reservoir A and a burner section B carried by the top plate C.

The latter is supported from the reservoir or tank A by means of a. plurality of rods C which at their lower ends are threaded into fittings A in the top of the tank A and at their upper ends are secured to lugs C formed in the top plate. A suitable bail or handle D is provided for carrying the fire pet from place to place, this bail or handle having fittings D which when turned to their upright position interlock with inclined lugs D carried by the top plate. The parts so far described are of old and well-known construction and in using such fire pots it is customary to pr0- vide a sheet metal shield E which is detachably carried by the top plate. This shield is of a size to receive a suitable melting pot E which rests on the top plate in the manner hereinafter described.

The shield performs a further function of directing the heated gases against the outer wall of the melting pot, thus increasing the eiiiciency of the device. However, as it is desirable sometimes to use the top plate as an open burner section means are provided for detachably securing the sheet metal shield E to the top plate. I-Ieretofore both the top plate and the bottom ring of the metal shield have been formed from castings and the present invention contemplates a novel, arrangement of stamping or other sheet metal member which can be used in place of casting members. The detailed construction and arrangement ofthese parts are shown in Figs. 2 to 6 respectively.

Taking up now in detail the top plate construction shown in Figs. 2 and 3, F designates the main body portion of the top plate which at its outer edge is provided with a strengthening flange F and also with lugs C which receive the supports or uprights C. The central portion of the main body section F is cut away at F to permit the passage of the hot gases from the burner to the interior of the melting pot shield. To strengthen the metal atthe central part of the top plate the inner edges G are preferably flanged, these flanges being inclined upwardly and terminating in inwardly project- 'ing U-shaped lugs H which form a very strong and rigid support for the melting pot or other article placed on the top plate C. In addition to these lugs the top plate section has a pair of outwardly projecting lugs H and H which are bent into cylindrical shapeto receive the bail or handle lugs D There is also a plurality oftongues I, I and I which are formed by striking a part of the metal of the main body portion F upwardlyand then bending it outwardly to the shape shown in Figs. 2 and 3. The tongues I, I andI cooperate with lugs J, 'J and J formed on the sheet metal retaining ring K which is secured by any suitable means to the lower end of the melting pot E. The detail of the retaining ring for the bottom of the shield E is shown in Figs. 4: and 5. This ring comprises a flat member which is bent to form an upwardly and outwardly inclined retaining flange L, the ring being then bent into circular form so that its ends M and M meet as shown in 4. Suiiicient stock is left to provide a horizontal flange N from which there projects inwardly the lugs J, J and J previously mentioned.

These lugs are provided with central recesses In looking the shield to the top plate it is only necessary. to place it on the latter. so that the recesses O register with the tongues I. The shield is then rotated to interlock the lugs J, J and J with the tongues I, I and I Vhen it is desired to remove the shield it is simply rotated to bring the recesses again into registration with the tongueson the top plate so that the shield can be liftedoif. V 7

While I have shown and described the invention with reference to securing a sheet metal shield to the top plate of a fire pot,it is obvious that the interlocking members are capable of other uses. 7

What I ,clalm as my invention 1s In a fire pot or the like, a top plate co'mprising a sheet metal 'stampinghavinga central aperturedportion and a flanged portion adjacent said openingyand' inwardly project ing' supporting lugs, said supporting lugs belng channel shaped in crosssection. In testimony whereof I afiix my slgnature.

CHARLES. R. LAMBERT. I 

